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    • EmailVerify.NET
      Email validation component, featuring full IETF-compliant syntax validation, DNS checking, mailbox existence test and tools for advanced batch processing.
    • ProxyClient.NET
      Powerful proxy client component with support for SOCKS 4, SOCKS 4a, SOCKS 5 and HTTP proxy servers, allowing to establish proxied connections from both new and existing sockets.
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    • Web-based, hosted email validation service
      Hosted email validation service that allows to validate lists of email addresses with ease, combining the power of our email validation technology with an array of fast, dedicated servers hosted at multiple worldwide locations and a super-cool web interface.

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    Email validation

    • Validate email addresses
      Free online demo of our email validation technologies, featuring full IETF-compliant syntax validation, DNS checking and mailbox existence test.

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    • EmailVerify.NET is now part of the Cobisi family of products
      Published on Thursday, January 19, 2012

    • Just launched: hosted email validation service beta
      Published on Friday, August 05, 2011

    • New support for SMTP dialog extraction and analysis and advanced proxy binding
      Published on Tuesday, July 05, 2011

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What is EmailVerify.NET?

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  • ยป EmailVerify.NET

EmailVerify.NET is a library for the Microsoft .NET platform that can be easily used to validate email addresses. It features an advanced and feature-rich syntax validation tool, built upon the IETF standards (RFC 1123, RFC 2821, RFC 2822, RFC 3490, RFC 3696, RFC 4291, RFC 5321, RFC 5322 and RFC 5336), complete DNS validation (including DNS MX records lookup), disposable email address (DEA) detection, SMTP connection and availability checking, mailbox existence checking, including greylisting detection and temporary unavailability support, with catch-all testing, Yahoo! mailbox validation and much more.

View an overview of all of the EmailVerify.NET's features

It is written completely in managed code (C#) and is compliant with Common Language Specification (CLS), so it can be used with any other .NET language, including VB.NET, C++/CLI, J#, IronPython, IronRuby, and F#.


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  • ProxyClient.NET
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About Cobisi
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Copyright © 2005-2012 Cobisi. All rights reserved.
Cobisi - Via Caratti, 38 - 35132, Padova - Italy (European Union)
VAT ID: IT04391160282